baber/WOPTO huggingface dataset:
Patent GB-579384-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J25/12
Filed: 1943-09-16
Abstract: 579,384. Electron oscillators. WESTERN ELECTRIC CO., Inc. Sept. 16, 1943, No. 15238. Convention date, June 19, 1942. [Class 39 (i)] In a velocity modulation device, the electron beam is brought to a focus within the input gap 15 and is then allowed to diverge freely in the drift space until it impinges on an output gap 20 of cross-sectional area sufficient to accommodate the whole beam. The first grid 18 of the output gap is preferably a spherical segment with its centre of curvature in the input gap, so that all electrons in the beam travel equal distances. The second output grid 19 is similarly curved so as to ensure equal transit times across the gap 20. A retarding electrode 25 within the drift space increases the transit time and may have its aperture closed by a spherically curved grid. The second output grid 19 may be replaced by a similarly curved solid collector surface. The electron gun 26, 28, 29 is designed on the principles set out in Specification 545,835. In a modification, a line focus is used ; the aperture 15 is then an elongated slot and the grids 18, 19 are segments of cylinders centred on the focus.
Patent GB-444372-A (GB)
Title: Improvements in or relating to the treatment of cellulose derivatives
IPC: C08B3/22
Filed: 1935-05-24
Abstract: <PICT:0444372/IV/1> <PICT:0444372/IV/2> Entrapped liquids are removed from solid materials containing cellulose derivatives by subjecting the materials simultaneously to a grinding and a pressing action, between complementary serrated or embossed surfaces at atmospheric temperature.  The treatment may be carried out in stages and the grinding and pressure may be increasingly severe in successive stages.  The process is applicable to the manufacture of cellulose acetate or other cellulose organic ester which is precipitated from the solution in which it is formed by addition of water, drained, and then subjected to the grinding and pressing operation.  Cellulose ethers may also be treated.  The materials may be passed through rolls with circumferential grooves of V or other shape.  The rolls may be arranged in sets of three and the pressure between them may be adjusted.  The rolls may be provided with scrapers, conveyers for material falling from the rolls, and troughs for collection of liquid.  As shown, cellulose derivative material preferably after draining, screening, or centrifuging, is fed by conveyer 36 to roll 25 and passes between that roll and roll 34.  It is taken off by the scraper 28 and pushed along until it is deposited on roll 125.  It passes between rolls 125 and 34 and is led by scraper 29 to a conveyer 136 and then to a further set of rollers.  Rollers 25, 125 and mounted in adjustable bearings so that their distance apart may be varied.  Roller 34 is mounted in movable bearings and is pressed against rollers 25, 125 by a hydraulic ram 24.  The rollers 25, 125 are grooved and arranged so that they intermesh with the grooves of roll 34.  The scraper 28 is placed close to the under surface of roller 34 and it touches the roller 25 tangentially.  It is provided with tongues fitting into the grooves of the roll 34, and its inclination is adjusted by means of a lever arm and screw.  A conveyer 37 is provided for collecting material which falls from roll 25 and scraper 28.  This material may be conveyed back to the conveyer 36.  Liquid pressed out from the material passes through a perforated plate 38 to a tank 39.  The rolls 25, 125, 34 may be driven at the same or different speeds and if the bearing of roll 34 is mounted in a non-vertical guideway, the pressures between that roll and the rolls 25, 125 may be different.
Patent GB-294165-A (GB)
Title: An improved bracket serving for the suspension of the pendulum and for the mounting of the movement of clocks in their cases
IPC: G04B41/00
Filed: 1928-05-24
Abstract: 294,165. Magneta Suisse Soc. Anon. July 19, 1927, [Convention date]. Pendulums.-Improved means for supporting the pendulum and for mounting the movement include a sliding member which, when raised, immobilizes the pendulum and lifts it off its support and also releases the movement for dismantling; and which, when lowered, frees the pendulum and locks the movement in its seating. A baseplate 1 has forwardly projecting walls 2 which are joined by a bridge 3 and carry screws 16 coacting with slots 15 in the sliding member 11. The pendulum 8 has a head 9 to coact with extensions 14 of the member 11 and is attached to the usual spring 6 having a cross pin 5 seated in slots 4 in the walls 2. A spindle 12 threaded into the bridge 3 has collars 12 for raising and lowering the member 11. The latter also has extensions 20 lying over a transverse member 19 which supports the movement in the parts 18 of the walls 2. When the slide 11 is raised by the spindle 13 the extensions 20 release the member 19 and the extensions 14 lift the head 9 into recesses 10 in the walls 2, at the same time raising the cross pin 5 out of its bearings 4.
Patent GB-664640-A (GB)
Title: Improvements in chucks for torsion testing machines
IPC: G21C7/113
Filed: 1949-06-09
Abstract: 664,640. Testing physical qualities of materials. AVERY, Ltd., W. & T., and HINDE, P. B. June 7, 1950 [June 9, 1949], No. 15345/49. Class 106 (ii). A chuck for use in a torsion testing machine has a central cylindrical bore 6 adapted to receive the end of a specimen 8 provided with opposed flats, the bore communicating with a pair of opposed parallel 'cylindrical bores 7, each adapted to receive a cylindrical key 9 having a flat to engage one of the flats on the specimen. To accommodate specimens of smaller diameter, a longitudinallyslotted sleeve is fitted into the central bore and the keys used have flats at greater distances from their axes.
Patent GB-561846-A (GB)
Title: Manufacture of secondary diamines
Filed: 1942-12-02
Abstract: Disecondary diamines are prepared by forming quaternary salts by alkylating diarylidene derivatives of primary diamines, preferably with a dialkyl sulphate or an alkyl ester of p-toluene sulphonic acid and subsequently hydrolysing these salts.  The diamines include ethylene-, trimethylene-, tetramethylene-, hexamethylene-, decamethylene-, and triglycol-diamine, p - bis - (b  - aminomethyl)benzene and p-bis-(b -aminoethyl)benzene, which are converted to the diarylidene derivatives by admixture with an aldehyde, e.g., benzaldehyde.  In examples dibenzal-hexamethylenediamine is alkylated by methyl-p-toluene sulphonate in presence of ethyl acetate and the quaternary salt is hydrolysed by water to N : N1 - dimethylhexamethylenediamine, and p-bis-(b -methyl-amino-ethyl)-benzene is prepared from p-bis-(b -benzalaminoethyl)-benzene which is itself prepared from p-bis(b -aminoethyl)-benzene and benzaldehyde.
Patent GB-291109-A (GB)
Title: Improvements in galley stove tongs
IPC: F24B15/10
Filed: 1928-05-25
Abstract: 291,109. Westlake, A. May 26, 1927, [Convention date]. Supports and containers for articles to be heated.-A device for retaining utensils on a galley or other stove liable to movement comprises a tong-like pair of arms D, D<1> pivotally mounted on a base B secured to the hot-plate and adapted to be turned into overlapping relation, means, such as a lock-nut E, being provided for securing the arms in position with the utensil held between them. The arms shown include substantially central outwardly curved bays b, b<1>, and the end p of one arm engages in the forked end p<1> of the other. A form is also illustrated comprising two pairs of tongs on a single pivot, which is mounted on the end of an arm hinged at the other end to the hot-plate so that, when out of use, it may be turned into the vertical position with the tongs hanging from it.
Patent GB-360351-A (GB)
Title: Improvements in driving chains for sprocket wheels
IPC: F16G13/06
Filed: 1931-05-26
Abstract: 360,351. Driving chains. AKTIEBOLAGET C. E. JOHANSSON, 46, Nygatan, Eskilstuna, Sweden. May 26, 1931, No. 15433. Convention date, July 7, 1930. [Class 24.] The links 2 .. 5 of a transmission chain are curved in a direction perpendicular to their surface so as to impart elasticity to the chain. Preferably the alternate links on each side of the chain are curved in opposite directions as shown.
Patent GB-790497-A (GB)
Title: Improvements in or relating to cocktail cabinets
IPC: A47B81/04
Filed: 1955-05-27
Abstract: 790,497. Cabinets. OLLINGTON, R. S. Aug. 27, 1956 [May 27, 1955], No. 15438/55. Classes 52(1) and 52(3): A cocktail cabinet has upper and lower doors, 2, 3, the latter when open forming a bar counter. A shelf 8 with a grille surface on -which glasses can be filled, the spillage being collected in a sump 10, is fitted in the cabinet together with shelves, racks, a roof-light and a waste bin 15. The door 3 is fixed when open by a depressable foot 21 and has a hinged flap 20, serving as a bar counter, and a sink 27 draining into the sump 10.
Patent GB-162306-A (GB)
Title: Improvements in and connected with radiators particularly for internal combustion engines
IPC: F28D1/047
Filed: 1920-03-19
Abstract: 162,306. Parsons, M., and Wellesley, R. March 19, 1920. No Patent granted (Sealing fee not paid). Jointing tubes to headers.-The tubes in a radiator are of zig-zag form, Fig. 2, and flattened crosssection, Fig. 3, but the end portions to be joined to the headers are straight. These portions are joined to the headers by passing through an externally screwthreaded ferrule e. Outside the header a the ferrule e is embraced by a union nut g, which compresses a wasber h on to the end of the ferrule e and on to the tube to form a water-tight joint. Inside the header, a nut i screws on to the ferrule. Reference has been directed by the Comptroller. to Specification 26478/04.
Patent GB-644722-A (GB)
Title: Preparation of 5-alkyl-5-(1, 2-dibrom-2-phenylethyl)-hydantoins
IPC: C07D233/76
Filed: 1948-06-09
Abstract: 5 - Alkyl - 5 - (11,21 - dibrom - 21 - phenylethyl)-hydantoin is prepared by brominating a 5-alkyl-5-styrylhydantoin, if desired in the presence of a solvent such as glacial acetic acid.  The products may be converted to water-soluble salts by treatment with an alkali or magnesium hydroxide.  Examples are given of the preparation of 5-methyl-, 5-ethyl- and 5 - propyl - 5 - (11,21 - dibrom - 21 - phenylethyl)-hydantoin.
Patent GB-146096-A (GB)
Title: Improvements in or relating to engine starting apparatus
IPC: F02N15/04
Filed: 1920-06-09
Abstract: 146,096. Bijur Motor Appliance Co., (Assignees of Lansing, R. P.). June 30, 1919, [Convention date]. Turning-gear.-In an electric starter for aeroplane or other engines, of the kind comprising a driving member adapted to engage an engine member and actuated through a safety clutch, the clutch is disconnected in case of backward starting by a threaded connexion between the engine and one of the clutch elements. In the form shown, the driving-member 25 has rectangular splines 26 and is advanced into engagement with internal splines 3 in the hollow end of the crank-shaft by means of a screwed connexion between the member 25 and a sleeve 35, which is driven from an electric motor 13 through planetary gearing, a barrel 32, and a safety clutch. The clutch comprises splined flanges 45, 48, which are drawn out of engagement by the action of the screw-threads if the engine starts backwards. Spring washers 49, interposed between the flange 48 and a flange 42 in the barrel 32, cushion the disengaging movement of the sleeve 35 and effect re-engagement when the backward movement of the engine stops. The planetary gearing comprises a pinion 28 on the motor shaft meshing with a toothed gear 30 carrying planet pinions 71, which mesh with a fixed gear 75 and with a gear 78 bolted to the barrel 32. The planet pinions 71 turn on spindles 73 carried by plates 63, 64 secured to the gear 30 by bolts 67. The motor 13 comprises a yoke 15 and end heads 16, 17 secured together and to a casting 4 by bolts 18. The casting 4 enters an opening 0 in the engine crankcase 1 and is secured by bolts 7.
Patent GB-1461576-A (GB)
Title: Pipe particularly for use as an air conduit
IPC: F16L9/00
Filed: 1974-04-09
Abstract: 1461576 Longitudinally corrugated metal pipe J DE RYCK 9 April 1974 [9 April 1973 24 Aug 1973] 15677/74 Heading F2P A pipe comprises at least one corrugated metal sheet bent about the longitudinal axis of the pipe, the sheet or sheets having adjacent longitudinal edge regions 1, 2 (Fig. 1) joined together to form the pipe and the corrugations in the or each sheet extending longitudinally of the pipe and being trapezoidal or rectangular in transverse cross-section, said adjacent longitudinal edge regions 1, 2 each having a respective corrugation formed therein and the respective corrugations being disposed one within the other. The metal sheet can be up to 2À0 mm thick and preferably is between 0À4 and 1À2 mm. thick and the longitudinal edges 1, 2 may be joined by riveting or welding. Reinforcing rings or strips 3 may be incorporated and the ends of the pipe may be uncorrugated (as in Fig. 2) to facilitate joining pipe lengths together. In a further embodiment (Fig. 3, not shown) the pipe has a generally rectangular cross-section wherein said sheet or sheets are bent along four longitudinal lines located between respective pairs of adjacent corrugations.
Patent GB-691783-A (GB)
Title: Improvements in or relating to the production of zinc
IPC: C22B19/18
Filed: 1949-06-13
Abstract: 691,783. Condensing zinc vapour. NATIONAL SMELTING CO., Ltd., WOODS, S. E., and PERRY, B. G. May 15, 1950 [June 13, 1949], No. 15694/49. Class 82(i) In the method of condensing zinc vapour by means of a molten metal the pool of molten metal is cooled by means of a circulating readily-fusible alloy. The Figure shows a condenser 1 for zinc vapour having a pool 6 of molten metal in which a single loop 7, 8 of pipe carries:the readily-fusible cooling alloy circulated by thermo-syphon consisting of a limb 10 surrounded by insulating material 11, and a return limb 13 surrounded by a jacket 15 in which cooling water can be circulated from an inlet pipe 17 and removed through any one of valves 18, 20, 21, 22 and 23 or pipe 24 depending on the degree of cooling desired. The rate of circulation of the readily-fusible alloy may be controlled by a valve. A number of such cooling units may be used in a condenser Suitable readily-fusible alloys are Pb 38 per cent and Sn 62 per cent; Bi 50 per cent, Pb 27 per cent, Sn 13 per cent and Cd 10 per cent; Sn 50 per cent, Pb 32 per cent and Cd 18 per cent. Specification 691,844. [Group XIII], is referred to.
Patent GB-529287-A (GB)
Title: Sterilizer
IPC: A61L2/26
Filed: 1939-05-26
Abstract: 529,287. Disinfectant apparatus. MICKELSEN, A. O. May 26, 1939, No. 15696. [Class 81 (i)] A sterilizer comprises a horizontal rotatable shaft, a pair of vessels secured on opposite sides of the shaft and a connection between the vessels so that, when the vessels are in vertical alignment, the liquid drains into the bottom vessel. As illustrated the sterilizer comprises a shaft 28, vessels 10 and 11 secured to the shaft at lugs 31 and 32 and connected by means of a drain 25 and an air vent 27.
Patent GB-373416-A (GB)
Title: Improvements in or relating to drinking troughs for birds and animals
IPC: A01K39/024
Filed: 1931-05-28
Abstract: 373,416. Drinking - appliances for animals. SALTMARSH, H. A., Barrow Hall, Barrow, Bury St. Edmunds. May 28, 1931, No. 15701. [Class 5 (ii).] Means for controlling automatically and individually the supply of water to a drinking trough 1 or number of drinking troughs for birds or animals from a common supply tank or other source of water supply comprises a float valve 3 of needle type co-operating with a seating 5 within a surrounding housing 2 and adapted to be disposed one within each trough, the housing 2 having means 6 for the attachment of a pipe or tube for connection to the source of water supply. The housing 2 may be formed integrally with the trough 1, Fig. 1, or may comprise an independent element, Fig. 4, the float 3 being supported within. the housing 2 by means of a rod 11.
Patent GB-1393293-A (GB)
Title: Electrophotographic photoconductive plate and the method of  making same
IPC: G03G5/085
Filed: 1972-04-05
Abstract: 1393293 Electro-photographic plate VARIAN ASSOCIATES 5 April 1972 [5 April 1971(2)] 15720/72 Heading G2C An electro-photographic plate is made by forming on a substrate a mixture of flux, glass and preactivated photo-conductive crystals and heating the mixture to cause at least partial sintering of the crystals and melting of the glass together with the formation of conductive bridges between the crystals by recryatallization from solution in the flux. The substrate is preferably glass bearing a layer of tin oxide, chromium or gold while the crystals may be a sulphide, selenide, telluride or sulphoselenide of cadmium or zinc. The crystals are activated by firing a mixture of the crystals, a flux, e.g. a halide of Cd or Zn and an activator e.g. a halide of Cu or Ag in a closed container at 600‹C for 25 minutes. The fired material is ground, sieved and made into an aqueous slurry together with glass particles for the formation of electro-photographic plate. Additional CdCl 2  may be used as flux in the mixture. The slurry is milled before spraying on to the substrate. The plate is fired at 500 to 600‹C. Conductive paint may be applied to the edge of the fired plate to make contact with the conductive layer.
Patent GB-476314-A (GB)
Title: Improved treatment of polyvinyl alcohols or their partial derivatives
IPC: C08K3/11
Filed: 1936-06-05
Abstract: The mechanical, thermal, colloido-chemical and chemical properties of polyvinyl alcohols or their partial esters, acetals or ethers are affected by treatment with substantive diazodyestuffs derived from diazotized benzidine or alkyl benzidines and naphthylamine sulphonic acids.  The dyestuffs in the form of pastes, suspension, solutions or molten may act on the polyvinyl compound in the comminuted state or in the finished form such as threads, films, hosepipes and in the latter case the treatment may be superficial or deep-seated.  In examples: (1) the viscosity of an aqueous solution of polyvinyl alcohol is increased by treatment with a solution of Congo red; (3) a viscous aqueous solution of polyvinyl alcohol is covered with a solution of Congo red and at the surface of separation a film is formed. Specification 476,426 is referred to.
Patent GB-400327-A (GB)
Title: Improvements in golf and other playing balls
IPC: A63B37/08
Filed: 1932-06-04
Abstract: 400,327. Golf balls. MARTIN, P. A., New Works, Granville Street, Birmingham. June 4, 1932, Nos. 15759 and 25869. [Class 132 (ii).] A golf or other playing ball comprises one or more layers of lubricated rubber windings enclosed in an envelope upon which outer windings and/or an outer covering are or is applied. The core 1 of the ball may be formed of one of the colloid substances described in Specifications 12272/06, [Class 132, Toys &c.], and 20517/09, [Class 132 (ii), Games], and is enclosed within an elastic envelope 2. The core is wound with three unlubricated layers 3, 4, 5 of rubber tape of decreasing width, and the surface of the outer layer coated with a lubricant such as soft soap that will gradually penetrate the windings. To enable the cover to be securely attached to the ball the lubricated windings are enclosed in an elastic envelope 6 which may or may not be covered with windings 12 before the cover 13 is applied. The envelope 6 may be left unsealed to allow the lubricant to penetrate the outer windings after the completion of the ball.
Patent GB-159791-A (GB)
Title: An improved device for cutting cord and the like
IPC: A47F13/04
Filed: 1920-06-10
Abstract: 159,791. Peterson, V. E. June 10, 1920. String-cutters. - A double-edged rectangular safety-razor or other blade 7 is secured between and with one edge extending across the notch 6 of a pair of bifurcated clamping- members 5 having apertures 13 by which they are secured to a support 4. The blade is secured between the members 5 by bolts 10 passing through the usual holes therein, the edge not in use and the end portions of the cutting-edge being covered by the members 5.
Patent GB-583084-A (GB)
Title: Improvements in or relating to control mechanism for change-speed gearing
IPC: B62M25/04
Filed: 1944-08-18
Abstract: 583,084. Controlling change-speed gearing. NORTON MOTORS, Ltd., and SHARRATT, F. R. Aug. 18, 1944, No. 15819. [Class 80 (ii)] Comprises an auxiliary neutral-finding lever 24 for the motor-cycle change-speed control described in Specification 424,154, wherein a foot- or hand-operated shift-lever, Fig. 1 (not shown) splined on a sleeve 10 which is freelymounted on a speed-selector spindle 20, operates the spindle stepwise in either direction through a ratchet-plate 19, secured to the spindle, and two oppositely-acting pawls 17, pivoted on an arm 13 secured to the sleeve 10 of the shiftlever, which latter is returned to the central position after each shift by a double-armed hairpin spring 14. The auxiliary neutralizing lever 24 has two spaced pegs 26, which, when the lever is raised, against spring-resistance, engage one or other of two inclined surfaces on the ratchet plate 19 to move the latter direct to the neutral from any gear position, the upper edge of the lever 24 lifting the pawls 17 off the ratchet plate during such movement.
Patent GB-785300-A (GB)
Title: Improvements in or relating to spring clip devices
IPC: F16B7/04
Filed: 1954-05-28
Abstract: 785,300. Spring clips. PRIMROSE, N. A. LORD. May 25, 1955 [May 28, 1954], No. 15919/54. Class 44 [Also in Group XIV] In a spring clip device of the kind embodying a spring clip 3 having arms 6 extending from a base which is pivotally mounted on and secured to a supporting member 2 to enable an article 13 to be turned on said pivot 8, the clip is formed with a resilient base 4 which is flexed when said arms are spread and a co-operating friction member 7 is mounted on or formed in one with said supporting member for engagement by said base, said friction member having a contact surface greater in all directions than the transverse dimensions of the narrowest part of the base. As shown in Fig. 1, the supporting member is also a spring clip having a resilient base and arms and when the arms of the clips are spread apart the bases 4 arch and engage the member 7, the friction thus obtained holding the two clips against relative turning. The pivot 8 has a head and is held in place by a circlip so that separation of the bases by more than a limited amount is prevented. In the modification shown in Fig. 2 the spring clip 2 and member 7 are replaced by a bracket 15 which is shown as being mounted on a wall 16 by a screw 17. This construction enables an article carried by the clip 3 to be moved in three planes.
Patent GB-1441541-A (GB)
Title: Liquid crystal display device
IPC: C09K19/54
Filed: 1974-04-10
Abstract: 1441541 Liquid crystal compositions MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 10 April 1974 [20 April 1973 (3)] 16015/74 Heading C4X An additive for producing homotropic alignment in an electro-optic nematic liquid crystal display device comprises at least one compound of the formula R is alkyl and the -OR group is present at the para and/or both meta positions, i.e. n is 1, 2 or 3. The amount added is preferably 0À5 to 5% by weight of the nematic material. The reduced aligning effect of additives having values of m less than those stipulated is also disclosed. In particular examples, -OR is methoxy or ethoxy, and n is 1 or 2. The nematic material may be a mixture of equal weights of p-methoxybenzylidene - p<SP>1</SP> - n - heptylaniline, p - npropoxybenzylidene - p<SP>1</SP> - n - pentylaniline, and p - ethoxybenzylidene - p<SP>1</SP> - n - butylaniline, although there is a general reference to azobenzenes, azoxybenzenes, alkoxybenzoic acids and phenyl benzoates.